Thinking more.... I wonder if I need such a big and heavy lens....
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Just for comparison, 80% or more of my landscape/nature/hiking photos are taken with my 12-40 mm f/2.8 PRO lens. For full frame equivalence, that would be approximately 24-80 mm. I also take a small, lightweight UWA and a light longer lens but really, they rarely come out of the bag. I also carry a set of extension tubes for ultra-close-ups.
Examine your photo style and match your lens mix to that style. If you take a lot of wides, pack your wider angle lenses. If you tend to shoot with a lot of reach, you might want to toss in your longest lens. Everybody is different. One size does NOT fit all.
The vast majority of folks carry way too much gear just because they have read about what other photographers use. You probably don't need all that extra weight. Those extra pounds would be better used on a good hiking-style tripod.